中国机械工程2024，Vol.35Issue(1)：67-73,82,8.DOI:10.3969/j.issn.1004-132X.2024.01.006
镍基高温合金的热机械疲劳寿命预测模型研究
Research on Thermo-mechanical Fatigue Life Prediction Model of Ni-base Superalloy
摘要
Abstract
In phase TMF tests on nickel-based high-temperature alloy GH4169,a commonly used material for engine hot end components,under conditions of 200-450 ℃ and 400-650 ℃ is conduc-ted.Considering the micro damage strain energy of polycrystalline materials in the elastic stages under the condition of TMF,a TMF life prediction model suitable for polycrystalline materials was pro-posed,model parameters were determined by combining the TMF test data.Three superalloys,GH4169,IN718,DD8,were used to evaluate the TMF life prediction ability of this model.The pre-diction accuracy of the life model is higher than that of the Manson-Coffin model and Ostergen model commonly used for TMF life prediction.关键词
镍基高温合金/热机械疲劳(TMF)/损伤应变能/寿命预测Key words
nickel-base superalloy/thermo-mechanical fatigue(TMF)/dmamage strain energy/life prediction分类
航空航天引用本文复制引用
崔海涛,钱春华..镍基高温合金的热机械疲劳寿命预测模型研究[J].中国机械工程,2024,35(1):67-73,82,8.基金项目
国家自然科学基金(91860111) （91860111）
